CaF2/SiO2 core–shell nanoparticles as novel fillers with reinforced mechanical properties and sustained fluoride ion release for dental resin composites

Cao, Jing; Pu, Yuan; Wang, Dan; Wang, Jie‐Xin

doi:10.1007/s10853-021-06371-6

Cited by 11 publications

(6 citation statements)

References 46 publications

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“…Other peaks at 750 cm −1 and 460 cm −1 can be attributed to the presence of sulfate and phosphate groups [18]. However, Si-O stretching vibration can also be indicated by the presence of a peak at 460 cm −1 [22]. Although, it is difficult to confirm the presence of CaF2 with FTIR spectra alone as it can only indicate presence of functional groups, some of the previous studies [18,21] have suggested that peak near 750 cm −1 is due to CaF2 presence which can be observed even in this current study too.…”

Section: Characterization Of Calcium Fluoride Crystalsmentioning

confidence: 99%

Process Intensification for Enhanced Fluoride Removal and Recovery As Calcium Fluoride Using Fluidized Bed Reactor

Sinharoy,

Lee,

Chung

2024

Preprint

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This study explored the feasibility of fluoride removal from simulated semiconductor industry wastewater and its recovery as calcium fluoride using fluidized bed crystallization. The continuous reactor showed best performance (>90% fluoride removal and >95% crystallization efficiency) at a calcium to fluoride ratio of 0.6 within first 40 days of continuous operation. The resulting particle size increased by more than double during this time along with a 36% increase in the seed bed height indicating deposition of CaF2 onto the silica seed. The SEM-EDX analysis showed the size and shape of the crystals formed along with high amount of Ca-F ions presence. The purity of the CaF2 crystals were determined to be 91.1% though ICP-OES analysis. Following the continuous experiment, different process improvement strategies are explored. The addition of excess amount of calcium resulted in an additional 6% fluoride removal, however, compared to this single stage process, a two-stage approach was found to be better strategy to achieve a low effluent fluoride concentration. The fluoride removal reached 94% with this two-stage approach under optimum condition of 4 + 1 h HRT combinations and a [Ca2+]/[F-] ratio of 0.55 and 0.7 for the two reactors, respectively. CFD simulation showed the impact of inlet diameter, bottom-angle shape and width and height ratio of the reactor on mixing inside reactor and possibility of further improvement in reactor performance by optimizing the FBR configuration.

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Section: Characterization Of Calcium Fluoride Crystalsmentioning

confidence: 99%

Process Intensification for Enhanced Fluoride Removal and Recovery As Calcium Fluoride Using Fluidized Bed Reactor

Sinharoy,

Lee,

Chung

2024

Preprint

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“…studies devote their efforts to develop fluoride-containing bioactive particles. CaF2/SiO2 core-shell nanoparticles were synthesized with a sol-gel method based on the CaF2 nanoparticles and the DRCs were prepared with Bis-GMA/TEGDMA and 50 wt% of CaF2/SiO2 nanoparticles which showed superior mechanical properties in flexural strength, flexural modulus, compressive strength, and hardness and sustained fluoride ion release [256]. In another study, LiAl-F layered double hydroxide (LDH) powder was synthesized and their performance was examined by mixing with commercial DRCs [257].…”

Section: Biological Characteristicsmentioning

confidence: 99%

Dental resin composites: A review on materials to product realizations

Cho

Rajan

Farrar³

et al. 2022

Composites Part B: Engineering

109

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“…The core-shell structure mentioned above is another way to achieve a multifunctional filler by combining a functional core and a mesoporous morphology of the shell. 90 , 102 Chen et al designed ZnO@m-SiO 2 core-shell structure particles and used them as fillers in DRCs (Fig. 2d ).…”

Section: Micromechanical Interlocking Structure On Filler/resin Inter...mentioning

confidence: 99%

“…Recently, CaF 2 /SiO 2 core-shell nanoparticles as novel fillers for DRCs were developed, which have a good prospect of application because of their sustained fluoride ion release ability and high FS (>110 MPa). 102 …”

Section: Micromechanical Interlocking Structure On Filler/resin Inter...mentioning

confidence: 99%

Micromechanical interlocking structure at the filler/resin interface for dental composites: a review

et al. 2023

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Dental resin composites (DRCs) are popular materials for repairing caries or dental defect, requiring excellent properties to cope with the complex oral environment. Filler/resin interface interaction has a significant impact on the physicochemical/biological properties and service life of DRCs. Various chemical and physical modification methods on filler/resin interface have been introduced and studied, and the physical micromechanical interlocking caused by the modification of fillers morphology and structure is a promising method. This paper firstly introduces the composition and development of DRCs, then reviews the chemical and physical modification methods of the filler/resin interface, mainly discusses the interface micromechanical interlocking structures and their enhancement mechanism for DRCs, finally give a summary on the existing problems and development potential.

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CaF2/SiO2 core–shell nanoparticles as novel fillers with reinforced mechanical properties and sustained fluoride ion release for dental resin composites

Cited by 11 publications

References 46 publications

Process Intensification for Enhanced Fluoride Removal and Recovery As Calcium Fluoride Using Fluidized Bed Reactor

Process Intensification for Enhanced Fluoride Removal and Recovery As Calcium Fluoride Using Fluidized Bed Reactor

Dental resin composites: A review on materials to product realizations

Micromechanical interlocking structure at the filler/resin interface for dental composites: a review

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